Acetylene-gas generator.



PATENTED OCT. l5, 1907.

E. M.4RosENBL/UTH. AGETYLENE GAS GENERATOR.'

APPLICATION FILED MAB. 9. 1907.

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E. M. RosBNBLUTH. ACBTYLENB GAS GENERATOR.

APPLIOATIN FILED MAB. 9. 1907.

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No. 868,293. PATENTED 00T. 15', 1907.

E. M. ROSENBLUTH.

l ACBTYLENE GAS GENERATOR.

APPLIGATION FILED MAB. a, 1907,

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AGETYLENE GAS GENERATOR. APPLICATION FILED 111.11.11, 1907.

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PATENTED 00T. 15, 1907;

E. M. ROSENBLUTH. AGETYLENE GAS GENERATOR.

APPLICATION FILED MAB. 9, 1907.

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No. 868,293. PATENTED oca-15, 1907.V

E; M. ROSBNBLUTH.

AGE'IYLENE GAS GENERATOR. APPLIoATroN FILED Mum, 1907.

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N0.s68,293. PATENTBD,OCT.15,1907.

. E. M. RosENBLUTH.

AGBTYLENE GAS GENERATOR.

APPLIOATION FILED MAB. 9. 1907. 7 SHEETS-SHEET 7. v

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WITNESSES: INVENTO:

EDWIN M. ROSENBLUTH, OF PHILADELPHIA, PENNSYLVANIA.

ACETYLENE-GAS GENERATOR.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application led March 9,1907. Serial N0. 361,562.

To all whom it may concern:

Be it known that I, EDWIN M. RosnNBLUTH, of Philadelphia, in the Stateof Pennsylvania, have invented a certain new and useful Improvement inAcetylene-Gas Generators, whereof the following is a specification,reference being had to the accompanying drawings.

r\ly invention relates to generators ol the class described in LettersPatent of the United States #821,540, granted to me )'[ay 22nd, 1906;wherein the generation ol` gas is initiated and terminated by the rotaryiriver'- sion of the generator casing in a base bracket having bearingsfor alined trunnions on the generator casing. The specific type ofgenerator described in said patent is provided with a valve which mustbe opened by the operator when the generator is turned to operativeposition, so as to admit air to the water chamber, to permit the waterto flow to the carbid. Said valve must also be closed by the operator,before the generator is turned to inoperative position, to prevent theescape of water through said valve. Moreover, as said generator does notcomprise any special nreans for permitting the escape of gas generatedby particles of partly decomposed carbid al'ter the generator is turnedto inoperative position; it is necessary for the operator to permit theescape of such after generated7 gas through the burner. Moreover, asdescribed in said patent, the supply of gas from the generator to theburner is directed through a flexible conduit which is directly attachedto the generator and which must be disconnected and connected by theoperator whenever the generator is removed or replaced. I have found inpractice that careless and inexperienced operators failed to properlymanipulate said air valve and sometimes failed to connect said gasconduit, and, that there is a commercial demand for generators which donot discharge after generatedgas through the burner. Therefore, it isthe general object of' this invention to so construct and arrange such agenerator that it may be removed from and replaced in its bearingswithout disturbing the conduit. which directs the gas from the generatorto the burner, and so that the mere rotary inversion ol' the generatorshall suflice to properly initiate and positively terminate thesupplyolgas to the burner, without requiring the operator to manipulateany auxiliary valve or other device.

Another general object of the invention is to so simplify theconstruction of certain parts of the generator as to facilitate theinitial assembling of the same.

In the form of' my invention hereinafter described, a valve is comprisedin one of the trunnions on the generator' casing, so as to beautomatically operated by the rotary movement of the generator, topermit the escape of the small quantity ol' gas generated, as aforesaid,after the generator is turned to its inoperative position, and toautomatically open a passage to admit air to the water receptacle whenthe generator is turned to its operative position, so as to permit thewater to fiow to the carbid. As hereinafter described, said trunnionforms a rotary casing for a valve plug which is maintained stationary bythe engagement of its outlet nozzle in the bearing which supports saidtrunnion, and, the flexible conduit through which gas is supplied to theburner is attached to the bearing bracket, apart irom said nozzle but incommunication therewith through said bracket; so that the generator maybe removed without disturbing said conduit.

The bearing bracket herein described and shown is claimed in mycopending application, Serial Number 353,805, filed January 24th, 1907.

My invention also includes the various novel features of'constructionand arrangement as hereinafter more definitely specified. I

In the accompanying drawings Figure I, is a central verticallongitudinal sectional view of: a generator conveniently embodying myimprovements. Fig. II, is a transverse vertical sectional view, taken onthe line II, II in Fig. I. Fig, III, is a transverse vertical sectionalview, taken on the line III, III in Fig. I. Fig. IV, is a fragmentarytransverse sectional view, taken on the line IV, IV in Fig. I. Fig. V,is a central vertical sectional view of a modified form of thev valvemechanism shown in Fig. I. Fig. VI, is a sectional'view, similar to Fig.V, but showing another form of valve mechanism. Fig. VII, is a sideelevation of a modified form of generator. Fig. VIII, is a centralvertical longitudinal sectional view of the generator shown in Fig. VII.Fig. IX, is a plan sectional view, taken on the line IX, IX, in Figs.VII, VIII. Fig. X, is a fragmentary transverse sectional view, taken onthe line X, X, in Fig. VIII. Fig. XI, is a central vertical sectionalview of a modified form of generator.

Referring to Figs. I, II, and III; the generator is arranged to berotatably supported by the bracket l, which may be conveniently securedin stationary position, by screws extending through its lugs 2. Saidbracket I, comprises the chamber 4, having the inlet 5, gas dischargenipple 6, and drip outlet 7, which latter is normally closed by thescrew plug S, having the wrench hold `9. The bracket I, is also providedwith the alined bearings l0 and II, for the alined trunnions l2, and I3,of the generator' casing I4, and said bearings respectively compriseclamping yokes I5 and 16, hinged thereto at 17 and provided with stoplugs IS, (see F ig. IIL) to limit their opening movement. The free endof said yoke l5 is provided with lugs 20 in which the swing bolt 22,turns on the pivot pin 23, and is fitted between a corresponding lug 25,on the bracket I, to which it is secured by the wing nut 2G, so as toclamp the trunnion l2 of the generator in its bearing l0. The trumrionI3 is similarly clamped by the yoke I6, having the lugs 27, in which thehand lever 2S, is arranged to turn on the pivot pin 29. As shown in Fig.

111, said lever 28, comprises the cam 30, arranged to engage the lugs31, between which said lever 28 is fitted.

As best shown in Fig. 1, the trunnions 12 and 13, are provided withcircular flanges 34 and 35 respectively secured to the opposite endwalls of the casing 14. Said trunnion 13, forms a valve casing for theconical valve plug 37 which extends axially therethrough, and

comprises the gas passageway 38, connecting the generator with the gaschamber 4, which is local to the bearing 11, through the nozzle 39,which depends from said plug in right angular relation to its axis, asshown in Figs. l and 111. Said nozzle 39, is provided with an adjustablenut 40, recessed to hold a facing of rubber 41, or other packing, whichforms a gasket fitted to the socket 42, in said bracket 1, local to theinlet 5, and arranged to seal the joint between the generator and gaschamber' 4 when connected as shown in Figs. 1 and 111.

The valve plug 37, is held in its casingby the screw plug 45, bearingagainst the spiral 4spring 46, which surrounds the reduced end 47, oisaid valve plug, and abuts against its shoulder 48. Said screw plug 45is provided with the axial bearing 44, entered in the valve plug 37, andbeing'in threaded engagement with the valve casing trunnion 13, has thewrench hold recesses 49, whereby it may be rotated, when it is necessaryto adjust the tension oi the spring 46, or to rcmove the valve plug 37.

The generator being of the invertible type, as aforesaid, may bemaintained in either ol' its two diametrically opposite positions by thenozzle 39 and the projection iormed by the screw 50 engaging therespectively opposite ends of the slot 52 in the trunnion 13. Saidprojection 50, being carried by the hinged yoke 16, and entered in saidslot 52, the generator may only be inverted when said projection 50 iswithdrawn from said slot by raising said yoke 16. Moreover, as saidnozzle 39, projects through said slot 52, the extent oi the latter isconveniently such as to limit the rotary movement of said trunnion andgenerator to one half revolution. when the yoke 16 is uplifted todisengage said projection 50, lrom said slot 52. However, the mererotary movement of the generator does not necessitate the removal of theyoke 15, which clamps the trunnion 12, for, as best shown in Fig. l,said trunnion 12, is not only smaller in diameter than the trunnion 13,but has less frictional surface in its bearing 10, so that said trunnionmay be readily turned in said bearing without releasing it.

As shown in Fig. 1, the casing 14, comprises the upper and lower walls55 and 56 having the circular openings 57 and 58 respectively surroundedby the flanges 59 and 60; said fl: nge 59, being fitted to the gasket 63in the removable lid 64, and, the fiange 60 being provided with thegasket 66, to which the removable lid 67, is fitted. Said lids arerigidly held in engagement with the flanges aforesaid by the swing bolts68, which turn on the pivot pins 69, in the lugs 70, on the lid 67, andwhich are arranged to be received between the lugs 72, on the lid 64.The free ends of said bolts 68, are threaded and provided with wing nuts75, whereby the lids 64 and 67, may be pressed in air tight relationwith their respective flanges 59 and 60. Said :flanges 59 and 6() arerespectively provided with the guide lugs 77 and 78, between which thebolts 68, are held in parallel position.

The opening 58 is sealed by the cup shaped casing 80, having its openend terminating in a lip fiange 81, which is secured to the wall 56,toform the gas tight chamber 82. The closed end wall 84, of said easing80, terminates in close proximity to the wall 55, of the casing 14, andis secured to the` flange 59, by the perforated annular rim 85, havingapertures 86, for the passage of the water 87, into the lid 64. Saidclosed end wall 84, is provided with a valve which is convenientlydisposed in concentric relation with the opening 57, and comprises thescrew-threaded socket 90, having in threaded engagement therewith, thebushing 91, arranged to be conveniently rotated by its wings 65, andthereby removed when desired. Said bushing 91, is provided with thepassageway 92, for water, the flow of which is restricted by the plunger93, extending through. said passageway and arranged to reciprocatetherein, but prevented from removal therefrom by having enlargements 94,at its ends.

The plunger 93, not only affords therequired restriction to the passageof water into the carbid chamber 82, but may be reciprocated in thepassage 92, to remove any obstructions which may lodge therein.

The removable carbid receptacle is arranged to snugly fit within saidcup shaped casing 80, and comprises the cylindrical shell 95, having oneend larger than the other to prevent its being improperly inserted insaid casing 80. Said large end is fitted with an imperforate removablelid 96, having diametrically opposite bayonet slots 97, arranged toengage the lugs 98, projecting from said shell 95. The small end of saidreceptacle is 'fitted with a grooved perforated removable lid 100.

As shown in Fig. 1, the carbid receptacle is pressed into its chamber82, by the coiled spring 112, in the lid 67, and incloses the removablecarbid cartridge 115. Said cartridge 115 contains both the loose carbid118, and the carbid ash 1119, but retains the latter at one end of thecartridge shell, so that the carbid 118, may' be separated from the ash119, as shown in Fig. l, or be held in contact therewith, bygravitation, in accordance with the position of the generator, thelatter being conveniently invertible by the handle 120, on the casing14. As best shown in Fig. 1, the cartridge 115, comprises the notches116 in its rim, through which the gas may freely pass from saidcartridge.

the burner, when the generator is turned to its inoperative positionshown in Fig. 1, 1 have provided the gas escape port 122, in the valvecasing trunnion 13, arranged to register with the port- 123, in thevalve plug 37, when the generator is in its inoperative position, sothat anylafter generated gas escapes through said port 122, to theatmosphere, and the supply of gas to the gas chamber 4, is terminated.

The vacuum relief tube 125, which extends into close proximity to thewall 56, in the casing 14, is an extension of the port 129, through thevalve Casing trunnion 13. As shown` in Figs. 1 and 11, said port 129,leads to the outer atmosphere, and is arranged to register with the port130, in the valve plug 37, and admit air to the casing 14, when thegenerator is turned to operative position','to then permit the fiow olwater lfrom said casing 14, into the carbid cartridge 115. The orifice jwhich is normally closed by the screw plug 131, and

As it is desirable to prevent the discharge of gas at which extendsthrough the lower' wall 56, of the casing,

v local to the inner' end of the tube 125, is arranged to affor'd accessto said tube 125, whereby said tube may be cleaned when said plug 131,is removed.

In the for'm of my invention shown in Fig. V; the

valve plug 37, is provided with the nozzle 132, extending through theopening '133, in the bearing 134, of the bracket 135, and may bedirectly connected with the burner by the flexible conduit 136.Likewise, as shown in Fig. V1, the flexible conduit 138, is directlyconnected to the nipple 139, which extends from the valve plug 140 inaxial alinement with its gas passageway 141. Said valve plug 140, isprevented fr'om rotating by the engagement of its radially extending pin142, in the opening 143, in the bracket 145.

In the for'm of my invention shown in Figs. VH to X, inclusive, thebracket 150, comprises the bearings 151, for the generator' tr'unnions153 and 154, which are clamped therein by the yokes 155, having theswing bolts 156. The casing 158, which is similar to the casing 80,shown in Fig. I, is provided with the gas outlets 159. leading into thehollow cylindr'ical tr'unnion 154, which comprises the per'for'ateddiaphragm 160, at. the inner end of the filter' casing 161, arranged toprevent the displacement of the mass of filtering material 162, which isinclosed by said filter casing to separate moisture from the gastransmitted therethrough, to the outlet nozzle 164. Said nozzle 164 isarranged to receive a flexiblec'onduit leading to a burner. Said filtercasing 161, comprises the screw cap 1654 which is provided with lugs166, wher'eby it may be conveniently rotated in threaded engagement withthe flange 167 on the outer end of the tr'unnion 154, to insert orremove said filter' casing when it is necessary to renew its charge offiltering material. The gas passageway 16S. through said cap 165, andnozzle 164, is protected by the shield 169, which is arranged to preventthe filtering material entering an'd clogging said passageway. In thisfor'rn of my invention the carbid receptacle comprising the cylindricalshell 170, is arranged to directly contain both the carbid 171 and ashes1.72. and to bring them in contact or separate them in accordance withits position. Said shell 170 is provided with opposite end caps 176 and177 which are secured in removable relation therewith by the studs 179and bayonet slots 180, as shown in FigA V111. Said shell 170 is providedwith the cor'rugations 182, adjacent to its small end, arranged todetain the ashes .'17 2. and, its large end is provided with theremovable carbid supporting screen 184. provided with the handles 185,for its convenient manipulation. Said screen 184, is reversible andcomprises the peripheral rim 187, arranged to maintain it in suchrelation to the cap 177 as to provide a space for such ashes as may besifted from the carbid through said screen. The cap 176, being providedwith the central recess 190, having an opening covered by the conicaldome 192.

The trunnion 153. comprises the valve casing 200,

provided with oppositely extending radial ports 202. and 203, instaggered relation to each other, which are provided with tubes 204 and205, respectively leading to the atmosphere through the generator casing206, and to the interior of said casing adjacent to its wall 207. asshown in Fig. 1X; the end of said tube 205,

l being above the level of the water 208, when the casing 206 is turnedto operative position so as to admit air I to said casing and permit thewater to flow to the car'- i bid; the air' being admitted through thevalve plug 21.0.

The valve plug 210, shown in Fig. VIH, is mairn tained in stationaryrelation to the bracket 150, by the engagement of its radially extendingpin 212, in the opening 213, in either of the bearings 151, of saidbracket 150, and is provided with the radially extending staggered ports215 and 216, which are joined bythe axially extending passageway 217.Said ports 215 and 216 are arranged to register with the respectiveports 202 and 203, in the valve casing 200, when the ally establishcommunication between the water chamber and the atmosphere, asabovecontemplated.

Referring to the form of my invention shown in Fig. X1; it may beobserved that the generator is in operative position, as distinguishedfrom the preceding tive position. The bracket 150, supports thegenerator casing 230, whose upper' and lower walls 231 and 232, comprisethe circular openings 233 and 234, 'respectively surrounded by theflanges 235 and 236, the former being' tted to the gasket 237, in theremovable lid 238, which is secured to the casing 230, by the swingbolts 240, arranged to turn on the pivot pins 241, between the lugs 242,on the fiange 235, and fitted between the lugs 244, on the lid 238. Theflange 236 is screw threaded and provided with the gasket 246, to whichthe lid 247, is fitted in threaded engagement with said flange. Said lidcomprises the lugs 248, whereby it may be readily rotated. The closedend of said cup shaped casing 250, is rigidly connected'to the casing230 by the brackets 251, and is provided with the valve 252, whosepassage way 254 is restricted by the plunger 255, which in the positionshown in Fig. X1 rests upon the inwardly bulged portion 257, ofthe lidy247, The inner surface of the closed end of said cap shaped casing 250,is provided with a sheet of absorbent material 258, for instance,blotting paper or asbestos, which serves to uniformly distribute thewater supplied at the center thereof, through the passageway 254, theperforated cap 259,

absorbent material by the spring 262, bearing against the imperforatecap 263, at the opposite end of said receptacle 260. Said cap 263,incloses the chamber 265, which is adapted to receive the ashes siftedfrom the carbid through the removable screen 266, when the generator isinverted to inoperative position, and said screen 266 is provided withthe handle 267, by which it may be Conveniently manipulated. 1t is to beunderstood that, otherwise, the generator shown in Fig. Xl, may beoperated like the generator first above described.

I do not desire to limit myself to the details of construction andarrangement herein set forth, as it is obvious that variousmodifications may be made therein, without depar'ting from the essentialfeatures of my invention, as defined in the following claims.

I claim z 1. In an acetylene gas generator', the combination with avalve casing,l having a port and forming' a trunnion for generator isinverted by its handle 220, to automatic of the carbid receptacle 260,being pressed against said l vso figures, wherein the generators areshown in inoperaf said generator; of a plug in said casing having apor't complementary to the por't in said casing; and means arranged tomaintain said plug stationary in said casing, substantially as setforth.

2. In an acetylene gas generator, the combination with a valve casingforming a trunnion for said generator; of a plug,y in said casing,having a port arranged to register with a complementary port in saidcasing leading to the atmosphere; and means arranged to maintain saidplugl 4. I'n an acetylene gas generator, the combination with a valvecasing forming a trunnion for said generator', and having a gas escapeport, and an air' inlet port; of a plug in said casing comprising a gasdischarge passageway leading therethrough, and having a gas escape por'tleading to said passageway, and an air inlet port independent of saidpassageway, arranged to respectively register with their complementaryports in said casing; and means ar'- ranged to maintain said plugstationary, substantially as set forth.

o. In an acetylene gas generator, the' combination with a valve casingforming a tr'unnion for said generator; of a plug in said casingcomprising ports arranged to be contr'olled by the rotation of saidgenerator; and'means arranged to maintain said plug stationary,substantially as set forth.

G. In an acetylene gas generator', the combination with a valve casingforming a trunnion for said generator, and having a gas escape port, andan air inlet port; of a plug in said casing comprising a gas dischargepassageway extending concentrically therethrough, and having a gasescape port leading to said passageway and an air inlet port independentof said passageway, arranged to respectively register with theircomplementary'ports in said casingv to open said gas escape port to theatmosphere when the generator is turned to its inoperative position, andto open said air inlet port to the atmosphere when the generator isturned to its oper'ative position, substantially as set forth.

7. An acetylene gas generator, comprising a water chamber, and having anair inlet extending into said water chamber; and means arranged toautomatically control said inlet by the rotary movement of saidgenerator, substantially as set for'th.

S. An acetylene gas generator, comprising axially alined tr'unnions,arranged to be clamped in suitable bearings, the frictional surface ofone of said trunnions being less than the other; and means arranged tofrictionally clamp each of said tr'unnions independently substantiallyas set forth. I

S). An acetylene gas generator, comprising a trunnion having apassageway extending therethrough; a bearing for said trunnion,comprising the inlet of a gas chamber which is local to said bearing anddistinct fr'om said 4tr'unnien, said .inlet being arranged to registerwith said passageway and means whereby the rotary movement of saidgenerator controls the ilow of gas through said passageway,substantially as set forth.

10. An actelyne gas generator', comprising a trunnion having apassageway extending therethrough; a bearing for said trunnion,comprising the inlet of a gas chamber which is local to said bearing anddistinct fr'om said trunnion, the walls of said gas chamber' beingintegral with said bearing; and, means whereby the rotary movement ofsaid generator controls the flow of gas through said passageway,substantially as set forth.

11. In an acetylene gas generator, the combination with a trunnion; of avalve in said trunnion; an outlet nozzle for said valve, arranged todischarge gas into a gas chamber' which is distinct from the generator;a gasket arranged to automatically seal the joint between said nozzleand said chamber and means whereby the rotation of said generatorcontrols the iow of gas through said passage way, substantially as setforth.

l2. In an acetylene gas generator', the combinationv with a trunnion; ofa valve in said tr'unnion; an outlet nozzle for said valve, arranged todischarge gas into a gas chamber' which is distinctfrom the generator; agasket arranged to automatically seal the joint between said nozzle andsaid chamber; and means whereby the rotary movement of said generatorcontrols the flow of gas through said valve, substantially as set forth.v

l-. In an acetylene gas generator, the combination with a trunnion; of avalve in said trunnion; an outlet nozzlek for said valve, arranged todischarge gas into a gas charnber which is distinct from the generator;a gasket, car'- ried by said nozzle, arranged to seal the joint betweensaid nozzle and said chamber; and, means whereby the rotary movement ofsaid generator controls the flow of gas through said valve,substantially as set forth.

14. In an acetylene gas generator, the combination with a trunnion; of avalve in said trunnion; an outlet nozzle for said valve, arranged todischarge gas into a gas chamber which is distinct from the generator; agasket arranged to automatically seal the joint between said nozzle andsaid chamber; means arranged to adjust said gasket relatively to saidnozzle; and, means whereby the rotation of said generator controls theflow of gas through said valve, substantially as set forth.

15. In an acetylene gas generator', the combination With a generatorcasing having apertures in its opposite walls; of a cup whose open endseals one of said apertures and whose closed end extends adjacent to theother' aperture, substantially as set forth. l

1G. In an acetylene gas generator, the combination with a generator'casing, arranged to contain Water and having apertures in its oppositewalls; ot a cup shaped casing whose open end seals one of saidapertures, and whose closed end comprises a water inlet passage, andextends above the water level in said casing when in idle position, butis submerged when in operative position, substantially as set forth.

1T. In an acetylene gas gener'ator, the combination with y a generator'casing, arranged to contain water and having apertures in its oppositewalls; of a cup shaped casing whose open end seals one of saidapertures, and whose closed end comprises a water inlet passage, andextends above the water level in said casing when in idle position, butis submerged when in operative position; and a perforated r'im securingsaid closed end of the cup to said generator casing, substantially asset forth.

1S.- In an acetylene gas generator', the combination with a generatorcasing, arranged to contain water and having apertures in its oppositewalls; of a cup shaped casing whose open end seals one of saidapertures, and whose closed end comprises a water inlet passage, andextends above the water'level in said casing when in idle position,

but is submerged when in operative position; a lid arapertures' in itsopposite walls; of a cup shaped casingv whose open end seals one of saidapertures, and Whose closed end comprises a water inlet passage andextends above the water level in said casing when in idle position, butis submerged when in operative position; a lid arranged to inclose theaperture at the open end of said cup shaped casing; a lid arranged toinclose the other aperture; and swing bolts connecting said lids,substantially as set forth.

20. In an acetylene gas generator, the combination with a generatorcasing comprising apertures in its opposite walls; of lids arranged toinclose said apertures; swing bolts pivoted to one of said lids andarranged to engage the other' lid; and means on said casing arranged toguide said swing bolts into parallel position, substantially as setforth.

21. In an acetylene gas generator, the combination with a casini" of anair inlet tube terminating close to the wall ol' said generator; meansarranged to control said inlet by the rotary movement of said generator;said casing havingl au orifice local to the end of said tube; and meansar'ranged to normally close said orillce, substantially as set forth.

' In an acetylene gas generator', the combination with a valve casing`having a port. and forming a tr'unnion for said generator; ot' a pluglin said casing having a port complementary to the port in said casing; abearing for said trunnion; means in said bear'ing arranged to maintainsaid plug stationary in said casing; and, means pivoted on said bearingarranged to clanrp said easing in fr tional engagement with its bearing,substantially as set forth.

25). ln an acetylene gas generator', the combination with a valve easinghavi a port and forming a tr'nnnion for said generator: 0t` a plug insaid casing having a port coniplenrentar'y to the port in said casing: abearing Vfor said trunnion: means in said bearing arranged to maintainsaid plug stationary in said casing; a yoke arranged to l'rietionallyeng ge said casing With its bearings; and, a swing bolt comprising awinged nut arranged to engage rid be ring to varv said frictionalengagement, substantially as set forth.

2-1. In an acetylene gas generator. the combination with a generatorcasing :u anged to contain Water and having apertures in its oppositeWalls; of a cup shaped casing whose open end seals one of said aperturesand Whose closed end comprises a water inlet passage; the combinationwith a carbid receptacle comprising, removable end caps; one of which isperforated and provided With grooves connecting said perforations andarranged to c0- operate with the closed end Wall of said cup shapedcasing. to direct water through said openings to the carbid containedtherein, substantially as set forth.

25. ln an acetylene gas generator, comprising a Water receptacle, thecombination with a cup shaped gas receptacle having one end larger' thanthe other; of a carbid receptacle snugly fitted to said gas receptacleand comprising one enlarged end preventing its improper inserti0n,'

and having removable caps, and arranged to receive a canister'containing carbid; the cap on the smaller' end of -said receptaclecomprising radial slots and circumferential openings, and having groovesconnecting said slots, ar'- ranged to direct water through said openingsto the carbid by the cooperation of said lid and the closed end Wall ofsaid cup shaped casing, substantially as set forth.

In testimony whereof, I have hereunto signed my name at Philadelphia,Pennsylvania, this 28th day of February 1907.

EDWIN M. ROSENBLUTH Witnesses ARTHUR E. PAIGE, MARION R. WHITTAKER.

